Biology Chapter 26

Front 1

The technique called _____ fertilization has been used for about 30 years to assist couples who have had difficult conceiving a child on their own.

Back 1

(in vitro)

Front 2

In vitro fertilization is when the ________ is fertilized outside of the ___________.

Back 2

(egg,uterus)

Front 3

The _______ experiment was conducted by a graduate student in 1953 who demonstrated that the early Earth could have produced compounds, like amino acids, necessary for life.

Back 3

(Miller or Miller-Urey)

Front 4

The collision of _______ with Earth has been shown to cause the formation of peptides, the chemicals which make up proteins.

Back 4

(comets)

Front 5

Three basic characteristics of life include the abilities to ______, ______, and _______.

Back 5

(use energy, reproduce, evolve)

Front 6

The formation of _______ , which surround all cells and act as a container for life, has been accomplished by scientists interested in the formation of early life on Earth.

Back 6

(membranes)

Front 7

Once all elements in the center of a star have been utilized for energy, the star reaches the ______ barrier.

Back 7

(iron)

Front 8

In order for heavy elements to be produced, a star must ______, which generates tremendous heat allowing for the formation of many of the elements found I the universe.

Back 8

(explode)

Front 9

A ________ can be made by stringing together the correct sequence of nucleotides together.

Back 9

(gene)

Front 10

The 3 requirements of life include energy for growth and change, to___________, & to___________

Back 10

(reproduce, evolve (in either blank))

Front 11

Stars are formed by the fusion of 3 ________ nuclei to produce carbon.

Back 11

(helium)

Front 12

A star explosion, know as a ____________ __________, occurs when ________ cannot be fused further.

Back 12

(super nova, iron)

Front 13

All of the hydrogen, carbon, oxygen, nitrogen, calcium, and iron in our body come from _________ _________ that was released by stars upon their death.

Back 13

(star dust)

Front 14

Living organisms are composed of 49%___________, 24%__________, and 24% oxygen.

Back 14

(hydrogen, carbon)

Front 15

The theory that life arose on Earth from organic building blocks that were present in the water on Earth’s surface is known as the __________ hypothesis.

Back 15

Abiogenesis

Front 16

In her experiments, Jennifer Black demonstrated that the intense heat and pressures meteorites experience during entry into earth’s atmosphere actually causes amino acids in a meteorite to form __________.

Back 16

Polypeptides

Front 17

Energy powers life through the inter-conversion of water and carbon dioxide to form __________.

Back 17

Carbohydrates